package com.oscar.web.domain;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;

@Entity
public class test {
    @Id //这个地方是要做主键用的
    private int bookid;

    @Column(nullable = false)
    private Long count;

    @Column(nullable = false)
    private int yearmonth;

    //get and set方法：


}
